Calvin detrick



(No Model.) i C. DETRIGK. TUBE LINED CEMENT GONDUIT AND PROCESS 0EMAKING THE SAME.

Patented Nov.

' @MWM' L WJTNESSE/S:

I 4York city, New York, .have invented. an Improved Tube-Lined Cement-Conduit and Proing is a specification.

, tlating the manner of forming the conduit,

Whichlprefer to use in carrying myinvention 2o by ramming in thedirection. of the arrowl plastic or semi-plastic material-'any availablethere will bethe 'conduit' shown in the transverse section, Fig. 1,consisting of a thin lin- To @ZZ whom, it may concern,.-

'that of the exteriorof the desired conduit, and

.when dry--and the casing be drawn forward machine shown in Fig. 3, abrief description of 5o which will suffice here, as it forms the subjectCALVIN' Darmon, or NW YORK, N,

TUBE-LlNED-CEMENT CONDUIT AND PROCESS v0F MAKING THE SAME.

SPECIFIGATION 'formingpart -fLtters Patent No. 2es,o33,dated november 6,1.883.

' Application med october i, ieee. '(N model.)

Be it known that I, CALVIN- DETR'ICK, a citizen of the United States,and a resident of ANew cess of Making l[he Same, of which` the follow-My invention consists of a conduit composed of a tubular lining of thinmetal clothedwith end-pressed cement of a define d;shap e, as describedhereinafter, my invention also con sisting of the process describedhereinafter of making the conduit. y

In the accompanying drawings, Figure 1 is a transverse section of aconduit made according to my invention; Fig.` 2, a diagram il-lusandFig. 3 a sectional view of the Vmachine into effect.

. Referring to Fig. 2, and supposing A to be a tubular casing of a formcorresponding withl G a lining-tube which is to forma permanent part ofthe said conduit7 and whichis preferably made of thin sheet-iron, ifthe'space be-4 tween the tube and thel casingA be packed cement, forinstance, which will bccomelhard and sections of tubing added from timeto time,

ing-tube, or, rather, succession -of sections of tubes, cloth ed with athick solid mass of cement,

the cement being insured by end ramming the no such solid cover ofcement c an be made by' rammng it round a' tube contained in a troughopen at thetop to permit vertical rammingas by`horizontally packing thematerial roundl a tube contained in a tubular casing.

As the application of the cement to the tube by hand would be a tediousoperation, I use the of a separate application for-a patent bearing evendate herewith.` i

The casing A, which may be of the form shown in Fig. 1, containsa ram,B, which can be reciprocated in the casing by an operatinglever, D,through the medium of 4any desired mechanism, that described in my saidapplical tion for aipatent being preferred.

A guiding-tube, H, is secured to the rear end of the casing A, andpasses through the ram B, aiming tube, (3f, passing through the sai dguiding-tube.

When an underground conduit has to be laid, a trench of suitable depthis dug in the ground, and the above-described machine is 4placed on thebottom of this trench', after Whicha section of the lining-tube G ispassed throughthe guiding-tube H. Semi -plasticv 'cement is placed inthe hopper M, which com-` munic'ates with the interior of the casing A,

an attendant being at hand to feed the hopper,

`While another attendant Vibrates the operat-l ing-lever D. Theconsequence of this will be the end packing of cement round theliningpipe G. As the operation is continued the entire machine willslowlyand intermittently packed cement presents to the ram, and Ytherecede', owing 4to the resistance which'the receding machine leaves aconduit consisting Itl-isfziiot necessaryto adhere to the-'form '.of.

casing' shown in Fig.. 1, but in carryingout my invention it isnecessary that the casing,

Whatever may be its form, shall betublular, y

and-that the cement should be packedendwise in the casingfaround thelining-tube-,so i.that

'the cement solidly and uniformly com-A pacted.

My invention is not restricted toany specific i material for 'theliningtubes. '-Thcymay in some `conduits be of substantial paper or`cardf board; but generally they will be of sheet-iron,

Iori

stance, than stove-pipe iron-fer the lining- 'tubes aresbstantiallyre-enforced by thetubular packing of cement7 and areprotected thereby from all injury. l.

I prefer in all cases to coat the lining-tubes with pitch or suitablevarnish or pigment before they become part ofthe conduit.

I claim as my inventionl. The mode herein described of formingcondui'tsfthe said modo consisting in clothing a lining-pipe with cementcompacted within a tbular casing by'rmnming-it into the end thereof, sslet Aforth, and advancigthecasing' from time to time, I1,11substantially as specified. 1 5

continiions coa-ting of i l.cement compacted to a l y deinedlexternalform, as set forth.

In testimony whereof .Ihave signed my name4 2o 'to this specificationin'the'pres'ence of two subscribing witnesses.

. CALVIN DETRICK. 4 '\Vitnesses: f

vJOHN E. PARKER, y HARRY SMITH.

